package com.zth.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class LoginInterceptor implements HandlerInterceptor {

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {

		Object account = request.getSession().getAttribute("account");
		
		if (account != null) {
			return true;
		} else {
			response.sendRedirect("/pages/account/login.html");
		}
		
		return false;//拦截false
	}

	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
			ModelAndView modelAndView) throws Exception {
		System.out.println("执行了postHandle");
		HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
	}

	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
			throws Exception {
		System.out.println("执行了afterCompletion");
		HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
	}
}
